Peanut Butter Sheet Cake with Peanut Butter Frosting – A Classic Crowd‑Pleaser
Introduction
If you’re a peanut butter fan, this Peanut Butter Sheet Cake is about to become your new favorite dessert. Soft, moist, and packed with nutty flavor, it’s topped with a luscious peanut butter frosting that melts into every bite. Perfect for potlucks, birthdays, or weeknight indulgence, this cake is easy to make yet tastes like something straight from a bakery.
Ingredients
For the Cake
1 box yellow cake mix
4 eggs
½ cup softened butter
1 cup creamy peanut butter
1 cup milk
½ cup sour cream
For the Frosting
½ cup butter, softened
½ cup creamy peanut butter
3 cups powdered sugar
¼ cup milk (more if needed)
1 tsp vanilla extract
Pinch of salt
Step‑by‑Step Instructions
Step 1: Preheat & Prep
Preheat oven to 350°F (175°C).
Grease a sheet pan or 9×13‑inch baking dish.
Step 2: Make the Batter
In a large bowl, combine cake mix, eggs, softened butter, peanut butter, milk, and sour cream.
Beat until smooth and well combined.
Step 3: Bake
Pour batter into prepared pan and spread evenly.
Bake for 25–30 minutes, or until a toothpick inserted in the center comes out clean.
Let cake cool completely before frosting.
Step 4: Prepare the Frosting
Beat softened butter and peanut butter until creamy.
Gradually add powdered sugar, mixing well.
Add milk and vanilla extract, beating until smooth and spreadable.
Stir in a pinch of salt to balance sweetness.
Step 5: Frost & Serve
Spread frosting evenly over cooled cake.
Slice into squares and serve.
Time & Yield
Prep Time: 15 minutes
Bake Time: 30 minutes
Total Time: ~45 minutes
Yield: 12–15 servings
Tips for Success
Use room‑temperature butter and eggs for a smoother batter.
Don’t overbake — the cake should stay moist.
If frosting is too thick, add a splash more milk until spreadable.
Serving Ideas
Sprinkle chopped peanuts or Reese’s pieces on top for crunch.
Serve with a scoop of vanilla ice cream for extra indulgence.
Cut into bite‑sized squares for party platters.
Variations
Chocolate Peanut Butter Sheet Cake: Add ¼ cup cocoa powder to the batter.
Swirled Frosting: Mix in melted chocolate for a marbled effect.
Nutty Crunch: Fold chopped pecans or walnuts into the batter.
Conclusion
This Peanut Butter Sheet Cake with Peanut Butter Frosting is rich, creamy, and irresistibly satisfying. Easy to prepare and perfect for sharing, it’s a recipe that will quickly become a family favorite.